Answer:
Option D, Anabaena
Explanation:
Some filamentous cyano bacterias during nitrogen starvation produces heterocysts which are specialized cells that are capable of fixing nitrogen.
Some common example of these bacteria's are - Cylindrospermum , Anabaena and Nostoc etc.
Anabaena fix the nitrogen in the vegetative cell through a filament under aerobic conditions when there is lack of fixed nitrogen either Ammonia or nitrate.
Hence, option D is correct.
The manager of a driver training programs,
Dr. William Van Tassel explains that when you are about to be involved in a
wreck, you should have your license, insurance card and other pertinent
document always ready inside your car. Even though you are a competent driver,
accidents may still happen, so keep your camera, pen and paper ready, to
document any untoward incidents and avoid any further problems.
Answer:
ATP molecule Energy is stored in the bonds between the phosphate groups (PO4–) of the ATP molecule. When ATP is broken down into ADP (adenosine diphosphate) and inorganic phosphate, energy is released. When ADP and inorganic phosphate are joined to form ATP, energy is stored.
Explanation:
The right answer is B active immunity.
For information, there is no complete immunity and incomplete immunity in immunology.
Active immunity is a form of immunity that protects the body through the production of antibodies when exposed to a first infection or vaccination.
This type of immunity is persistent. Example of measles: previously safe measles viruses are applied during vaccination.